| Manufacturer | Part Number | Description |
|---|---|---|
| HAOYING HAOYING | PT131B | Melt Pressure Transmitter |
| HAOYING HAOYING | PT131 | Melt Pressure Transducer |
PowTech |
PT1311 | High Efficiency Synchronous Boost DC/DC Converter |
Fairchild |
FPT131 | General-Purpose Silicon Phototransistors |